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Image Processing - Tensor Transform and Discrete Tomography with MATLAB  (R) (Paperback): Artyom M. Grigoryan, Merughan M.... Image Processing - Tensor Transform and Discrete Tomography with MATLAB (R) (Paperback)
Artyom M. Grigoryan, Merughan M. Grigoryan
R2,245 Discovery Miles 22 450 Ships in 12 - 17 working days

Focusing on mathematical methods in computer tomography, Image Processing: Tensor Transform and Discrete Tomography with MATLAB (R) introduces novel approaches to help in solving the problem of image reconstruction on the Cartesian lattice. Specifically, it discusses methods of image processing along parallel rays to more quickly and accurately reconstruct images from a finite number of projections, thereby avoiding overradiation of the body during a computed tomography (CT) scan. The book presents several new ideas, concepts, and methods, many of which have not been published elsewhere. New concepts include methods of transferring the geometry of rays from the plane to the Cartesian lattice, the point map of projections, the particle and its field function, and the statistical model of averaging. The authors supply numerous examples, MATLAB (R)-based programs, end-of-chapter problems, and experimental results of implementation. The main approach for image reconstruction proposed by the authors differs from existing methods of back-projection, iterative reconstruction, and Fourier and Radon filtering. In this book, the authors explain how to process each projection by a system of linear equations, or linear convolutions, to calculate the corresponding part of the 2-D tensor or paired transform of the discrete image. They then describe how to calculate the inverse transform to obtain the reconstruction. The proposed models for image reconstruction from projections are simple and result in more accurate reconstructions. Introducing a new theory and methods of image reconstruction, this book provides a solid grounding for those interested in further research and in obtaining new results. It encourages readers to develop effective applications of these methods in CT.

Image Processing - Tensor Transform and Discrete Tomography with MATLAB  (R) (Hardcover, New): Artyom M. Grigoryan, Merughan M.... Image Processing - Tensor Transform and Discrete Tomography with MATLAB (R) (Hardcover, New)
Artyom M. Grigoryan, Merughan M. Grigoryan
R5,877 Discovery Miles 58 770 Ships in 12 - 17 working days

Focusing on mathematical methods in computer tomography, Image Processing: Tensor Transform and Discrete Tomography with MATLAB (R) introduces novel approaches to help in solving the problem of image reconstruction on the Cartesian lattice. Specifically, it discusses methods of image processing along parallel rays to more quickly and accurately reconstruct images from a finite number of projections, thereby avoiding overradiation of the body during a computed tomography (CT) scan. The book presents several new ideas, concepts, and methods, many of which have not been published elsewhere. New concepts include methods of transferring the geometry of rays from the plane to the Cartesian lattice, the point map of projections, the particle and its field function, and the statistical model of averaging. The authors supply numerous examples, MATLAB (R)-based programs, end-of-chapter problems, and experimental results of implementation. The main approach for image reconstruction proposed by the authors differs from existing methods of back-projection, iterative reconstruction, and Fourier and Radon filtering. In this book, the authors explain how to process each projection by a system of linear equations, or linear convolutions, to calculate the corresponding part of the 2-D tensor or paired transform of the discrete image. They then describe how to calculate the inverse transform to obtain the reconstruction. The proposed models for image reconstruction from projections are simple and result in more accurate reconstructions. Introducing a new theory and methods of image reconstruction, this book provides a solid grounding for those interested in further research and in obtaining new results. It encourages readers to develop effective applications of these methods in CT.

Brief Notes in Advanced DSP - Fourier Analysis with MATLAB (Hardcover): Artyom M. Grigoryan, Merughan Grigoryan Brief Notes in Advanced DSP - Fourier Analysis with MATLAB (Hardcover)
Artyom M. Grigoryan, Merughan Grigoryan
R4,701 R4,084 Discovery Miles 40 840 Save R617 (13%) Ships in 12 - 17 working days

Based on the authors research in Fourier analysis, Brief Notes in Advanced DSP: Fourier Analysis with MATLAB(r) addresses many concepts and applications of digital signal processing (DSP). The included MATLAB(r) codes illustrate how to apply the ideas in practice.

The book begins with the basic concept of the discrete Fourier transformation and its properties. It then describes lifting schemes, integer transformations, the discrete cosine transform, and the paired transform method for calculating the discrete Hadamard transform. The text also examines the decomposition of the 1D signal by so-called section basis signals as well as new forms of 2D signal/image representation and decomposition by direction signals/images. Focusing on Fourier transform wavelets and Givens Haar transforms, the last chapter discusses the problem of signal multiresolution.

This book presents numerous interesting problems and concepts of unitary transformations, such as the Fourier, Hadamard, Hartley, Haar, paired, cosine, and new signal-induced transformations. It aids readers in using new forms and methods of signals and images in the frequency and frequency-and-time domains.

Multidimensional Discrete Unitary Transforms - Representation: Partitioning, and Algorithms (Hardcover): Artyom M. Grigoryan,... Multidimensional Discrete Unitary Transforms - Representation: Partitioning, and Algorithms (Hardcover)
Artyom M. Grigoryan, Sos S. Agaian
R8,387 Discovery Miles 83 870 Ships in 12 - 17 working days

This reference presents a more efficient, flexible, and manageable approach to unitary transform calculation and examines novel concepts in the design, classification, and management of fast algorithms for different transforms in one-, two-, and multidimensional cases. Illustrating methods to construct new unitary transforms for best algorithm selection and development in real-world applications, the book contains a wide range of examples to compare the efficacy of different algorithms in a variety of one-, two-, and three-dimensional cases. Multidimensional Discrete Unitary Transforms builds progressively from simple representative cases to higher levels of generalization.

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